EFFECTS OF MECHANICAL STRESS ON SOFT MAGNETIC MATERIALS UNDER ROTATIONAL MAGNETIZATION

• Abstract:

  This paper concerns effects of mechanical stress on soft magnetic silicon iron sheets subject to rotational magnetization (RM). RM is typical for armatures of rotating machines and for T-joint regions of transformer cores. In both cases, distinct mechanical stress may arise, e.g., from temperature changes or from clamping. Simulation of such magneto-mechanical conditions on a specifically designed test apparatus shows that tensile (or compressive) stress of several MPa intensity yields distinct effects on all three permeability, energy losses and magnetostriction.
• Keywords:

  rotational magnetization, magnetic losses, magnetostriction, stress effects, soft magnetic materials
• Download:

  IMEKO-WC-2000-TC4-P139.pdf
• DOI:

  _unreg_wc-2000.139

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